Cygnus is a constellation in the northern sky. Cygnus means "swan" in Greek. There is a pattern of stars in Cygnus that is called the Northern Cross. This is because the pattern of stars looks like a cross. The constellation Crux (constellation) has a pattern of stars that is called the Southern Cross. The astronomer Ptolemy listed Cygnus in the 2nd century when he made a list of constellations.
|Pronunciation||//, genitive //|
The Northern Cross
|Right ascension||20.62 h|
|Area||804 sq. deg. (16th)|
|Stars with planets||57|
|Stars brighter than 3.00m||4|
|Stars within 10.00 pc (32.62 ly)||1|
|Brightest star||Deneb (α Cyg) (1.25m)|
|Meteor showers||October Cygnids|
|Visible at latitudes between +90° and −40°.|
Best visible at 21:00 (9 p.m.) during the month of September.
- "Cygnus (swan) also (modern) Northern Cross". Harvard. Retrieved 27 January 2013.